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CCNP

350-401

0 下载量 2 浏览量更新于2024-07-03 收藏 3.3MB PDF 举报

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"《Implementing Cisco Enterprise Network Core Technologies v1.0》（350-401 PassFast Todd Lammle z_lib）是一本专注于帮助考生准备Cisco CCNP Enterprise考试的专业教材。该书籍更新至版本1.0，提供了针对考试350-401的实际练习题和解答，深入探讨了企业网络的核心技术，旨在提升读者在架构设计、虚拟化、基础设施、网络保障、安全性和自动化等领域的理论知识和实践能力。在第一章"Architecture"中，重点内容占总目标的15%，涉及了以下关键知识点： 1.1 企业网络设计原则：讲解了不同的设计模式，如分层设计（Tier 2、Tier 3）、容量规划（Fabric Planning），以及高可用性技术如冗余、FHRP（故障切换路由协议）和SSO（单点登录）的概念与应用。 1.2 WLAN部署设计原理：详细介绍了无线网络部署的不同模型，包括集中式、分布式、无控制器、控制器基础、云管理和远程分支模式，并强调了位置服务在WLAN设计中的重要性。 1.3 区分本地（on-premises）与云端网络：讨论了企业在选择网络架构时如何考虑数据存储、服务交付和安全性等方面，尤其是在云计算日益普及的背景下。后续章节，如第二章"Virtualization"关注虚拟化技术在企业网络中的实施，提供实例和策略；第三章"Infrastructure"深入研究网络基础设施的构建和管理；第四章"Network Assurance"涵盖了网络性能监控和优化方法；第五章"Security"则着重于网络安全策略和保护措施；第六章"Automation"探讨自动化工具和技术如何提升网络运维效率。通过这本书，读者不仅能掌握CCNP Enterprise 350-401考试所需的理论知识，还能通过实际问题的解决来增强实战技能，为顺利通过考试和在企业网络环境中成功实施和管理技术打下坚实的基础。"

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Chapter 2: Virtualization

The objectives covered in this chapter:

10% 2.0 Virtualization

2.1 Describe device virtualization technologies

2.1.a Hypervisor type 1 and 2

2.1.b Virtual machine

2.1.c Virtual switching

2.2 Configure and verify data path virtualization

technologies

2.2.a VRF

2.2.b GRE and IPsec tunneling

2.3 Describe network virtualization concepts

2.3.a LISP

2.3.b VXLAN

1. What is the role of an Active Virtual Gateway (AVG)?

A. An AVG responds to ARP queries with the MAC address of the Master

gateway.

B. An AVG responds to different ARP queries with the MAC addresses of

AVFs.

C. An AVG responds to different ARP queries with the MAC address of the

Backup gateway.

D. An AVG responds to ARP queries with the MAC address of the Standby

gateway.

2. Identify the virtualization technology that includes a specific application a

user wants to run, the support files for that applications, but not the operating

system on top of which the application runs.

A. Virtual Data Path

B. Virtual Switch

C. Virtual Server

D. Container

3. What type of hypervisor runs on top of a traditional operating system (e.g.

on top of Microsoft Windows)?

A. Type 1

B. Type 2

C. Type 3

D. Type 4

4. Which of the following is true regarding the operation of a virtual server’s

virtual network interface card (also known as a “virtual NIC” or “vNIC”)?

A. All virtual NICs share the MAC address of a physical NIC in the physical

server.

B. All virtual NICs share a virtual MAC address.

C. A virtual NIC can simultaneously connect to multiple virtual switches.

D. Each virtual NIC within a virtual machine has a unique MAC address.

5. What is the term used to refer to a broadcast domain within a VXLAN

network?

A. VLAN

B. VEM

C. VNI

D. VTEP

Chapter 2: Answers

1. What is the role of an Active Virtual Gateway (AVG)?

B. An AVG responds to different ARP queries with the MAC

addresses of AVFs.

An Active Virtual Gateway (AVG) is a type of gateway used by Gateway

Load Balancing Protocol (GLBP). GLBP is unique among the First Hop

Redundancy Protocols (FHRPs) in that instead of having a single gateway

service all traffic from a subnet, it load balances the traffic across as many as

four Active Virtual Forwarders (AVFs). An AVG accomplishes this by

responding to ARP queries (for a default gateway’s virtual IP address) with

different MAC addresses (i.e. the MAC addresses of the AVFs in a GLBP

group).

2. Identify the virtualization technology that includes a specific application a

user wants to run, the support files for that applications, but not the operating

system on top of which the application runs.

D. Container

A container contains an application and its support files. The underlying

operating system can support multiple containers containing applications

need that operating system. A virtual server contains an operating system. A

virtual data path is a technology that influences data flow, such as creating a

tunnel between two sites. A virtual switch runs on a hypervisor and can

logically interconnect virtual devices (e.g. virtual servers or virtual routers)

also running on that hypervisor, in addition to logically connecting to a

physical server’s network interface card (NIC).

3. What type of hypervisor runs on top of a traditional operating system (e.g.

on top of Microsoft Windows)?

B. Type 2

A Type 1 hypervisor (also known as a “native” or “bare metal” hypervisor)

runs directly on a server’s hardware. However, a Type 2 hypervisor (also

known as a “hosted” hypervisor) runs on top of a traditional operating

system. Hypervisors are not categorized as either Type 3 or Type 4.

4. Which of the following is true regarding the operation of a virtual server’s

virtual network interface card (also known as a “virtual NIC” or “vNIC”)?

D. Each virtual NIC within a virtual machine has a unique MAC

address.

A virtual NIC is software associated with a unique MAC address, which can

be used by a VM to send and receive packets. Also, a vNIC (just a like a

physical NIC) can only connect to one switchport at a time.

5. What is the term used to refer to a broadcast domain within a VXLAN

network?

C. VNI

Virtual Extensible LANs (VXLANs) support over 16 million broadcast

domains, thanks to a VXLAN’s 24-bit identifier field, as opposed to using

VLANs, which support just over 4000 broadcast domains (due to a 12-bit

VLAN field). This identifier is called a VXLAN Network Identifier, which is

abbreviated as VNI. The device that does the VXLAN encapsulation is called

a Virtual Ethernet Module (VEM). Each VEM has (at least) one IP address,

and that IP address is assigned to an interface called a VTEP, which stands

for VXLAN Tunnel Endpoint. Each VTEP can be associated with one or

more VNIs.

Chapter 3: Infrastructure

The objectives covered in this chapter:

30% 3.0 Infrastructure

3.1 Layer 2

3.1.a Troubleshoot static and dynamic 802.1q

trunking protocols

3.1.b Troubleshoot static and dynamic

EtherChannels

3.1.c Configure and verify common Spanning

Tree Protocols (RSTP and MST)

3.2 Layer 3

3.2.a Compare routing concepts of EIGRP and

OSPF (advanced distance vector vs. link

state, load balancing, path selection, path

operations, metrics)

3.2.b Configure and verify simple OSPF

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